Hawthorn House

This project involved the renovation and extension of an existing farmhouse. The extension was equal in size to the existing large building. The challenge on this project was to seamlessly integrated the environmental aspects of the build, some modern, some traditional, without compromising the historic presence of the building.

Major structural works were carried out to the existing structure. The extension was of a timber frame construction insulated with hempcrete. Hemp, in common with all similar plants, transforms carbon dioxide during its rapid growth and releases oxygen to the atmosphere. This has an immediate positive effect for the environment. The captured carbon remains within the Hemcrete and, hence, within the fabric of the building and has the added advantage of being a good insulator, allowing the building heating temperature to be reduced by up to 2 degrees celcius. This results in a significant amount of energy being saved throughout the life of the building, helping to combat global climate change. Hemcrete has natural resistant to mould, fungus, insect and rodent attack. The vapour permeability of Hemcrete means that where conventional construction materials may suffer from interstitial moisture content that can harbour unwelcome spores, the drier 'breathing' of Hemcrete provides a healthier environment for occupants. In addition the insulation to the existing structure was dramatically upgraded to achieve consistency throughout the building and thus the integrity of the "Eco" aspects of the build.

Part of the extension was also in close proximity to an existing large tree which necessitated the use of mini piles rather than traditional foundations.The project includes a ground source heat pump and solar panels. All stone from the project was salvaged and recycled from demolitions on site along with existing materials for example, roof slates, floor boards etc.